This page explains how Lewis Pierce (USATT# 89696)'s rating went from 1212 to 1224 at the 2nd Butterfly Austin Fall Classic RR held on - 1 Nov 2014. The links below take you to pages that describe various aspects of the rating processor.

The rating processor goes through 4 passes in order. The links take you to pages that provide detailed explanations of the calculations during each of the 4 passes.